Overview
The AD7247ATQ, produced by Analog Devices Inc., is an enhanced version of the industry-standard AD7247 dual 12-bit digital-to-analog converter (DAC). This component is part of the DACPORT® series and is designed to offer high precision and reliability in various applications. The AD7247ATQ features a monolithic CMOS chip with integrated output amplifiers and a Zener voltage reference, eliminating the need for external user trims to achieve full specified performance. It is compatible with most modern microprocessors and supports a wide power supply range from 12 V to 15 V, making it versatile for different system configurations.
Key Specifications
| Specification | Value |
|---|---|
| Number of Bits | 12 |
| Number of D/A Converters | 2 |
| Settling Time | 10 µs |
| Output Type | Voltage Output |
| Power Supply Range | 12 V to 15 V |
| Output Ranges (Single Supply) | 0 V to +5 V, 0 V to +10 V |
| Output Ranges (Dual Supplies) | 0 V to +5 V, 0 V to +10 V, ±5 V |
| Output Amplifier Capability | +10 V across a 2 kΩ load to GND |
| Package Type | 24-Lead CerDIP (Narrow 0.3 Inch) |
Key Features
- Dual 12-bit DACPORT® on a single chip, offering space savings and increased reliability.
- Microprocessor compatible with high-speed data latches and interface logic.
- Faster interface times and better reference variations with VDD.
- Faster settling times compared to previous models.
- REF OUT/REF IN function allowing use of either on-chip 5 V reference or an external reference.
- Asynchronous LDAC signal for updating DAC latches and analog outputs.
- Double-buffered interface structure with an 8-bit wide data bus for the AD7237A model.
- Parallel load capability for the AD7247A model.
- Fabricated in Linear Compatible CMOS (LCMOS) technology, combining precision bipolar circuits with low power CMOS logic.
Applications
The AD7247ATQ is suitable for a variety of applications requiring high precision and reliability in digital-to-analog conversion. These include:
- Industrial control systems
- Medical devices
- Aerospace and defense systems
- Automotive systems
- Test and measurement equipment
Q & A
- What is the resolution of the AD7247ATQ?
The AD7247ATQ has a resolution of 12 bits.
- How many D/A converters are included in the AD7247ATQ?
The AD7247ATQ includes two D/A converters.
- What is the settling time of the AD7247ATQ?
The settling time of the AD7247ATQ is 10 µs.
- What are the output ranges available for single supply operation?
For single supply operation, the output ranges are 0 V to +5 V and 0 V to +10 V.
- Can the AD7247ATQ use an external reference voltage?
- What is the maximum voltage the output amplifiers can develop across a load?
The output amplifiers can develop +10 V across a 2 kΩ load to GND.
- In what package types is the AD7247ATQ available?
The AD7247ATQ is available in a 24-Lead CerDIP (Narrow 0.3 Inch) package.
- Is the AD7247ATQ compatible with modern microprocessors?
- What technology is used in the fabrication of the AD7247ATQ?
The AD7247ATQ is fabricated in Linear Compatible CMOS (LCMOS) technology.
- What are some typical applications of the AD7247ATQ?
The AD7247ATQ is used in industrial control systems, medical devices, aerospace and defense systems, automotive systems, and test and measurement equipment.
